Tensioning device



June 17, 1930. E. HANO 1,765,149

' TENSIONING DEVICE 'Filed May '7. 1928 I 11v VENTOR I 1" EDWARD HANG. V L M W 7 fi I ATTORNEY EDWARD. HANO, or HOLYOKE, MASSACHUSETTS, assrenon T PHILIP HANG comeny,

. ing device.

Patented June 17, 1930 UNITED TATE Persist series INC., OF NEW YORK,N. Y., A CORlEORAlION OF MASSACHUSETTS VTENSIONING nnvion I Application filed May 7, 1928. Serial' No. 275,935.

I This invention relatesto tensioning devices and in particularto one adapted for use in connection with the tensioning of paper to be operated upon by a writing machine.

particular object. of the invention is to provide a simplified tensioning device which may be used in connection with webs of paper arranged to be fed from folded piles or from rollers into the writing machine;

A still further object of the invention is to provide a tensioning device which is adjustable so that the webs of paper can be properly aligned to be fed to. the writing machine in register, the tension being maintained on the paper through the medium of suitable rollers and contact plates.

To enable others skilled in the art'to fully comprehend the. underlying features of my invention that they may embody the'same-in the various modifications in structure and relation contemplated, a drawing depicting a preferred formhas been annexed as a part of this disclosure and in such drawing, sim

ilar reference characters denote correspondmg parts throughout all the views, of which,

Figure 1 is a view inside elevation, a part thereof being shown ,in section to illustrate the construction of my improved tensioning device, the same being shown in its application to a writing machine and being positioned to feed into the writing machine, the paper in web formation.

Figure 2 is a top plan view ofthetension- Figure 3 is a enlarged-view in sectional elevation of the rear end of-the .tensioning device, the method of mounting the "slides anc rollers being clearly shown, and 7 Figure 4 is a section taken on-the line 4-4 of F igiire 3 and illustrateshow the rolls and shelves are mounted in the tensioning device.

Referring to the drawings in detail, 5 indicates a writing machine of any character which is arranged to have fed through one e5.

sidethereof, paper in web formation 6, the paper being drawn from suitablerolls 7 which are carried on a roll holder 8 and which is supported in connection with the tensioning device through the medium of a suit-ableroll holding brackets 9. Inasmuch as two would be used to support the opposite ends eras" roll or roll h0lder,-th,ese roll holding brackets are each secured to the bottom 10 of the frame 11 of the tensioning device, the framebeing rectangular constructed of substantially housing 12 which forms the longitudinal sides of the device and which are connected together at their ends through the medium of the suitable cross plates 13 and 14, both of which are of angular formation, the forward one 13 being arranged to rest in any suitable portion of the writing machine so that the webs of paper may be drawn thereinto in proper alignment." 7

If desired, the rectangular side pieces or frames 11 may be separated so that one por-v tion thereof indicated by the numeral 16 may constitute a removable cover, although any desired construction may be employed in this instance. The side frames, in their depending portions 17, as illustrated inFigure' 3,

carry the hereinbefore mentioned roll brack-- et 9 which is secured thereto through the medium of the rivet 18. These depending porv the rollers as will be hereinafter described.

The-frames 10, at their opposite, inner sides, are provided w1th .the headed rivets or cam pins 21, these cam pins entending through cam slots 22 formed in slides 23 mounted within the frames and due to their mounting on the disposed the reduced end 28 of the pull bar,

29. Access to the pull bar is provided through the medium of a cut out 30in the 2 rear connecting plate 1% and it is quite evident that when the extensions 28'of1 the pull bar 29 are not resting in the notches .26 of the sidewalls 24,'the-sides 23 will be moved to-- 5 i ward theopposite endof thedevice through the medium of the slide springs 31 which connect the ends of the slides with the cross frame piece 13.

It is quite evident, too, that when the frame pieces are drawn forwardly or toward the writing machine by the springs 31, there being one of these springs provided for each of the slides, thatthe curvature of the cam slot 22 in said slide, will cause depression of the slide, thus carrying the tensioning rollers 32 into position against the plate or shelves 20. This is clearly illustrated in Figure 3,

in which the upper edge 33 of the slides are cut to provide stops 34 against which the end 35 of the rollers 32 abut, thus preventing with the plate 20, so that the paper passed overt-he plate or shelves 20 and beneath the rollers 32 will be tensioned during its. feed into the machine.

It is evident that there is a cross plate or shelf 20 provided for each of the rollers 32 and when the pull bar is not in its locking poindicated a roll from which thelength of- 40 sition as shown in Figure 3, these rollers will be resting upon the plate 20, due to the cam slot 22 forcing the slides downwardly to carry the rollers on to the plates 20. This is clearly illustrated in Figure 1 and in this instance the springs 37 yieldably retain the rolls 32 in position against the plates or cross shelves It is of course understood that while I have paper may be drawn, it is to be distinctly under stoodthat the method of handling the paper whether in roll or in folded form is immaterial to my invention, the operating parts of the device and construction thereof cooperating with the paper after it is fed into the'tensioning devicetopermit the sameto be properly fed into the writing machine in alignment and in register.

It is quite evident, therefore,'that I have provided a tensionmg device which is adaptable for use in connection with a writing machine into which paper in fan fold-formation or in superposed web formation is to be fed for the making of copies and a device which can be manufactured at small cost,

has few operating parts and which will effect ively place the same tension on all of the webs of paper passingtherethrough.

It is also evident that I have provided a I device wherein the tension'may be released by the'withdrawal of the rolls. from their holding plates and one in which the rolls may 7 be locked in their non-engaging position so that the webs of paper may be properly fed through. the device and may be placed in alignment after which the rolls maybe released to engage the webs so aligned.

lVhile I have illustrated and described my invention with some degree of particularity, I realize that in practice various alterations therein may be made. I therefore reserve the right and privilege of changing the form of the details of construction or otherwise altering the arrangement of'the correlated parts without departing from the spirit of the invention or the scope ofthe appended claims. Having thus described'my invention What I claim as new and desire to secureby United States Letters Patent is 1. A tensioning device for use in permit-- ting the feed of paper inweb .formation to' a writing machinecomprising a main frame having notches therein, pins on the main frame, a movable frame having cam slots therein Wlbh which the pins are in engagement, rollers supported solelyon the movable frame, shelves for the rollers, stop extensions on said movable frame for limiting the movement of the rollers relative to the said frame, springs for yieldably maintainthe rollers against said extensions, a spring for normally urging the movable 7 fr me in one direction and bringing the roll ers into engagement with the shelves, and a locking bar carried by themovable frai ne. and arranged to drop into the notches of the main frame for preventing operation of'the movable frame by its sprin 2. A 'tensioning device comprising a main frame, pins on the main frame, a-movable frame having cam slots therein in which said pinsenga'ge, a plurality of rollers mounted solely on the movable frame, a shelf for each of said rollers and a spring for normally urging the movable frame in one direction whereby the cam slots will cause the rollers to be positioned on sa1d shelves. v

A tensionlng device comprising a mainframe, pins on the main frame, a movable frame having cam slots therem n which said pins engage, a plurality of rollers mounted of saidrollers carried on said main frame, a spring for normally urging the movable frame in one direction whereby the cam slots will cause the rollers tobe positioned on said shelves and springs for yieldably holding the rollers on said shelves. i

solely on the movable frame, a shelf foreach In testimony whereof I ai'iix my signature.

EDWARD mine. as 

